Hi Dmitry, Thank you for the patch! Yet something to improve: [auto build test ERROR on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Dmitry-Yakunin/bpf-cgroup-skb-im... base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: m68k-sun3_defconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): net/bpf/test_run.c: In function 'bpf_prog_find_active_storage': 47 | cgrp = task_dfl_cgroup(current); | ^~~~~~~~~~~~~~~ 47 | cgrp = task_dfl_cgroup(current); | ^ 50 | cgrp->bpf.effective[BPF_CGROUP_INET_INGRESS]); | ^~ net/bpf/test_run.c: In function 'bpf_test_run': net/bpf/test_run.c:67:8: error: implicit declaration of function 'bpf_cgroup_storages_alloc'; did you mean 'bpf_cgroup_storage_alloc'? [-Werror=implicit-function-declaration] 67 | ret = bpf_cgroup_storages_alloc(dummy_storage, prog); | ^~~~~~~~~~~~~~~~~~~~~~~~~ | bpf_cgroup_storage_alloc net/bpf/test_run.c:115:2: error: implicit declaration of function 'bpf_cgroup_storages_free'; did you mean 'bpf_cgroup_storage_free'? [-Werror=implicit-function-declaration] 115 | bpf_cgroup_storages_free(dummy_storage); | ^~~~~~~~~~~~~~~~~~~~~~~~ | bpf_cgroup_storage_free cc1: some warnings being treated as errors vim +/task_dfl_cgroup +47 net/bpf/test_run.c 38 39 static struct bpf_cgroup_storage **bpf_prog_find_active_storage(struct bpf_prog *prog) 40 { 41 struct bpf_prog_array_item *item; 42 struct cgroup *cgrp; 43 44 if (prog->type != BPF_PROG_TYPE_CGROUP_SKB) 45 return NULL; 46 48 49 item = bpf_prog_find_active(prog, 51 if (!item) 52 item = bpf_prog_find_active(prog, 53 cgrp->bpf.effective[BPF_CGROUP_INET_EGRESS]); 54 55 return item ? item->cgroup_storage : NULL; 56 } 57 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org